Locking device for a valve

Details Locking device for a valve Locking device for a valve

1997-10-29

1998-10-20

Barrett, Suzanne Dino

Locks

Special application

For control and machine elements

137385, 70175, F16K 3500

Patent

active

058230238

ABSTRACT:
An air regulator valve has a knob which is slidable between a locked position in which it engages teeth on the end of a valve bushing and an unlocked position in which it can be rotated about the valve bushing to rotate the valve shaft. A lock tab is fastened to the end of the shaft and extends through an opening in the knob. The knob is locked in the down position by passing a padlock shackle through an opening in the lock tab.

REFERENCES:
patent: 1993784 (1935-03-01), Henderson
patent: 2748589 (1956-06-01), Hulslander
patent: 2748794 (1956-06-01), Dodds
patent: 4788840 (1988-12-01), Wilson, Jr.
patent: 5161568 (1992-11-01), Turvey
patent: 5188335 (1993-02-01), Pettinaroli
patent: 5568952 (1996-10-01), Ruegg
patent: 5638857 (1997-06-01), Alcumbrack
patent: 5649437 (1997-07-01), Royka, Jr. et al.
patent: 5664447 (1997-09-01), Neeley

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